The Tuberosity Of The Navicular Bone In Medial View

Description

Medial anatomy of the tarsal navicular is isolated with attention on the navicular tuberosity, a rounded prominence projecting medially and curving toward the plantar surface. The sequence orients the viewer to the concave proximal surface for the talar head posteriorly and then tracks distally toward the facets for the three cuneiforms, keeping the tuberosity as the dominant landmark on the medial border. Subtle rotation clarifies how the tuberosity sits inferior to the dorsal surface and anterior to the calcaneonavicular portion of the midfoot. Clinically, this is the insertion site of the tibialis posterior tendon, so the bony contour and its plantar-medial projection matter in posterior tibial tendon dysfunction and adult acquired flatfoot deformity. The animation helps correlate tendon line of pull with the tuberosity’s position relative to the talonavicular joint, a relationship that underlies medial midfoot pain, accessory navicular syndrome, and irritation from shoe wear or orthoses. A common point of confusion is distinguishing the true navicular tuberosity from an os naviculare (accessory navicular), and motion around the medial border makes that distinction easier to teach than a single still. Use this asset in gross anatomy and musculoskeletal medicine modules covering the tarsal bones, in podiatry and orthopaedic teaching on the medial longitudinal arch, or in radiology primers when correlating the medial foot with oblique radiographs, CT, or MRI of the talonavicular region. It also fits surgical education on tibialis posterior tendon reconstruction, medial approach landmarks, and symptomatic accessory navicular excision. Anatomical accuracy verified by SciePro's Medical Advisory Board.